CN109595034B - Checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir - Google Patents
Checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir Download PDFInfo
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- CN109595034B CN109595034B CN201910086889.2A CN201910086889A CN109595034B CN 109595034 B CN109595034 B CN 109595034B CN 201910086889 A CN201910086889 A CN 201910086889A CN 109595034 B CN109595034 B CN 109595034B
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- 239000003245 coal Substances 0.000 title claims abstract description 125
- 239000011435 rock Substances 0.000 claims abstract description 90
- 230000008595 infiltration Effects 0.000 claims abstract description 55
- 238000001764 infiltration Methods 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003673 groundwater Substances 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000010276 construction Methods 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 7
- 210000001364 upper extremity Anatomy 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 6
- 210000001015 abdomen Anatomy 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims 1
- 230000002089 crippling effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 17
- 238000000034 method Methods 0.000 description 9
- 238000011161 development Methods 0.000 description 8
- 238000005325 percolation Methods 0.000 description 7
- 206010017076 Fracture Diseases 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002250 progressing effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a kind of I-shaped strong side resistances of coal mine underground reservoir to seep checkdam, between coal column dam body at left and right sides of tunnel, for groundwater reservoir and tunnel to be isolated, block the water source in groundwater reservoir, it successively includes upper flange that checkdam dam body is seeped in the I-shaped strong side resistance from top to bottom, web and lower wing plate, the vertical cross-section perpendicular to dam facing of dam body is in " I " fonts, it further includes the strong portion, side at left and right sides of web that checkdam dam body is seeped in the I-shaped strong side resistance, the strong portion, side includes the first resistance infiltration portion at least extending S1 length to the side of groundwater reservoir on the basis of web thickness and being formed.Due in checkdam coal rock layer tunnel located underground, the surrouding rock stress being subject to is complex, it is excessive that the present invention can reduce coal column dam body local pressure simultaneously, crippling, infiltration occurs, effectively overcome traditional two lateral wall portion of checkdam tunnel weak and the phenomenon that easily seeps water, meets water storage and the security requirement of coal mine underground reservoir.
Description
Technical field
The present invention relates to the crossing domain more particularly to a kind of coal mine underground reservoir of mining engineering and hydraulic engineering are I-shaped
Checkdam is seeped in strong side resistance.
Background technique
The construction of sluice gate and floodgate wall is standardized in " safety regulations in coal mine " and " mine geological hazards provide ", main
The long term of groundwater reservoir water storage is not considered based on the anti-angle harnessed the river；In terms of hydraulic engineering, to the dam body of surface reservoir
More detailed regulation has been done in construction, although having grinding for related fields about the construction of coal mine distribution underground reservoir checkdam
Study carefully, but surface reservoir dam body is built with groundwater reservoir checkdam with significantly different.
Coal mine underground reservoir dam is compared with surface reservoir dam body, surface reservoir dam body only by hydraulic pressure effect and
Self gravitation effect；And coal mine underground reservoir dam stress is complex, is not only acted on by the lateral pressure of hydraulic pressure, there are also come
From in the surrouding rock stress of coal column around or rock mass, simultaneously because stable state has not yet been reached in rock stratum above groundwater reservoir, rock stratum collapses
Fall and dam body caused to impact, adopted with coal seam and different coal and mine shake etc. certain influence is all had on dam body.
The artificial checkdam of the coal mine underground reservoir largely used at present, based on wall type checkdam, in actual use
There is local dam body unstability and infiltration phenomenon, to practical safe handling in its portion, side, that is, artificial dam body and coal column dam body junction
It has some impact on.Current existing artificial checkdam, around design have slotting and anchor pole.Although accordingly reducing to artificial
The stress of checkdam and coal column dam body junction, but since the intensity of dam concrete structure itself is much larger than chain pillar layer
Intensity, and manually dam body and coal column dam body junction contact area are smaller, when artificial checkdam bears larger pressure from surrounding rock,
Dam body helps coal column dam body two can all generate biggish pressure, may cause corresponding crack increase or crippling,
And then infiltration phenomenon is induced, there is insecurity factor.
In addition, dam body can all generate top country rock and bottom plate biggish when checkdam bears larger pressure from surrounding rock
Pressure be easy to cause corresponding crack increase or crippling, usually on dam body under this larger pressure effect
There is roof caving in portion and infiltration phenomenon, heave generate differential settlement, has some impact on to practical safe handling.
The Chinese invention patent of notification number 103422469B discloses a kind of artificial checkdam of coal mine underground reservoir, the people
Work checkdam is embedded into coal column dam body and the country rock around adit, and the cross section of the artificial checkdam is arc, arc
The concave surface of the artificial checkdam of shape is towards the groundwater reservoir.The invention also discloses a kind of the artificial of coal mine underground reservoir
The connection method of checkdam and coal column dam body and country rock.Artificial checkdam is embedded into coal column dam body and country rock, people is enhanced
The connection of work checkdam and coal column dam body and country rock improves artificial checkdam antiskid performance.Although the patent is to coal mine underground water
The artificial checkdam in library has carried out correlative study, but the patent is concerned with the web surface stress problem of dam body, does not examine
The local pressure for considering coal road two sides coal column dam body weak point destroys and Seepage problems, does not also consider that dam body and top plate and bottom plate join
Locate local weak problem, does not propose any processing means.
A kind of Chinese utility model patent " artificial checkdam of coal mine underground reservoir " of notification number 204299622U is open
A kind of artificial checkdam of coal mine underground reservoir, the checkdam is between coal column dam body for groundwater reservoir and lane to be isolated
Road, and the both ends of the checkdam are extend into the coal column dam body, the checkdam are single arch, the checkdam it is convex
Facing towards the groundwater reservoir.Due to single arch checkdam convex surface towards groundwater reservoir, reduce dam body and be stressed directly, will
Power decomposes on the coal column dam body of two sides, reduces dam body thickness, saves cost.Although the patent is further in dam body two sides
Right and left shoulders is arranged in portion, side, but the effect of shoulder is connection web and coal column dam body, while can pass reservoir water pressure from web
It is delivered to coal column dam body, this just determines that the depth of its shoulder insertion coal column dam body is shallower (0.3-0.5m), and the width of shoulder
It is relatively narrow (identical as the thickness of dam body), do not consider that the local pressure of coal road two sides coal column dam body weak point destroys and seepage flow is asked yet
Topic.
Therefore, in the present case, a kind of dam body is designed, the intensity in two lateral wall portions has both been improved, reduces local portion, side crack
Increase and prevent the crippling of coal column dam body, infiltration, and overcome butt entry roof is weak easily to collapse, reduces floor crack and increase
It is subject to and prevents the I-shaped checkdam of coal mine underground reservoir of bottom plate crippling, the effective use to coal mine underground water,
And safety of coal mines is of great significance.
Summary of the invention
It is an object of the invention to overcome the shortcomings of existing technology, provide a kind of dam body be stressed directly it is small, while can
Overcome coal road two sides coal column dam body weak point, and to reduce coal column dam body local pressure excessive, crippling occurs, seeps
Water improves the artificial checkdam of whole groundwater reservoir safety.
The present invention provides a kind of I-shaped strong side resistance infiltration checkdam of coal mine underground reservoir, the coal column at left and right sides of tunnel
Between dam body, for groundwater reservoir and tunnel to be isolated, the water source in groundwater reservoir is blocked, checkdam is seeped in the I-shaped strong side resistance
Dam body successively includes upper flange, web and lower wing plate from top to bottom, and the vertical cross-section perpendicular to dam facing of dam body is in " I " fonts,
It further includes the strong portion, side at left and right sides of web that checkdam dam body is seeped in the I-shaped strong side resistance, and the strong portion, side is included in abdomen
The the first resistance infiltration portion at least extending S1 length to the side of groundwater reservoir on the basis of plate thickness and being formed, strong portion, the side insertion
Into two sides coal column dam body, in the upper end insertion back country rock in web and strong portion, side, the lower end in web and strong portion, side is embedded in
In roadway floor country rock.
Preferably, the upper flange extends to form upper flange on the basis of the width and thickness of web around；And/or
The lower wing plate extends to form lower wing plate on the basis of the width and thickness of web around；Preferably extend at least 50cm.
Preferably, the upper flange insertion roof rock depth is 50-100cm；And/or the lower wing plate is embedded in bottom plate
Country rock depth is 50-100cm；Preferably, the upper flange lower surface and back maintain an equal level；And/or table on the lower wing plate
Face and roadway floor maintain an equal level；It is preferred that upper flange, lower wing plate are the concrete structure of thickness 30-50cm.
Preferably, the junction between the upper flange insertion roof rock part and roof rock is in dam body width direction
It is equipped with multiple groups anchor pole, anchor pole passes through the loosening layer of the roof rock, is inserted into stable rock mass；Preferably, every group of anchor
Bar has 3, wherein one perpendicular to upper flange, in addition two it is symmetrical in 45° angle with upper flange horizontal direction.
Preferably, the junction between the lower wing plate insertion floor rocks part and floor rocks is in dam body width direction
It is equipped with multiple groups anchor pole, anchor pole passes through the loosening layer of the floor rocks, is inserted into stable rock mass；Preferably, every group of anchor
Bar has 3, wherein one perpendicular to lower wing plate, in addition two it is symmetrical in 45° angle with lower wing plate horizontal direction, so infusing
It is formed after slurry and stablizes the closely knit area Zu Shen.
Preferably, the depth of strong portion, the side insertion coal column dam body is at least 50cm, preferably 60-200cm, more preferably
80-150cm；Preferably, maintain an equal level on the inside of the strong portion, side with tunnel inner wall；Preferably, the strong portion, side is thickness 30-50cm's
Concrete structure；Preferably, the inner wall in first resistance infiltration portion is provided with one layer of impervious barrier.
Preferably, the strong portion, side further includes extending S2 length to tunnel side on the basis of web thickness and being formed
Second resistance infiltration portion；Preferably, the length S2 in second resistance infiltration portion is no more than the length S1 in first resistance infiltration portion；Preferably,
The length S1 in first resistance infiltration portion is at least 50cm.
Preferably, strong portion, the side insertion coal column dam body part is inserted into dam body short transverse with coal column dam body junction
Multiple groups anchor pole, anchor pole pass through the loosening layer of the coal column dam body, are inserted into stable coal column dam body；Preferably, every group of anchor pole
Have 3, wherein one perpendicular to strong portion, side, in addition two it is symmetrical in 45° angle with strong portion, side horizontal direction, so in slip casting
It is formed afterwards and stablizes the closely knit area Zu Shen.
Preferably, the I-steel that lateral and vertical interlaced arrangement is in the arrangement of " well " font is provided in the web；It is preferred that
Ground, the lateral I-steel are extend into the strong portion, side；Preferably, the vertical I-steel extend into described upper and lower
In wing plate.
Preferably, there are bar constructions in the position where web for the lower wing plate, convenient for being connect with web, one-piece casting
Form whole lower wing plate；Preferably, in the position where web, there are bar constructions in the strong portion, side, convenient for being connect with web,
One-piece casting forms portion, whole strong side.
Preferably, the ratio between the thickness H and span length L of the web is 0.1-0.3.
Preferably, emergency peephole is reserved in the web.
The utility model has the advantages that
After above-mentioned technical solution, upper and lower wing plate has the following technical effect that compared with the existing technology: (1) leading to
It crosses the lower part in web and adds lower wing plate, lower wing plate floor space is big, therefore can reduce substrate pressure, while substrate-loading also can be improved
Power, and can more effectively enhance the globality on basis, differential settlement is adjusted, the development of bottom plate lower part Rockmass fractures is effectively reduced,
Reduce bottom plate unstable failure；(2) upper flange is added by the top in web, upper limb plate suqare is relatively large, can more divide
The scattered pressure from surrounding rock for sharing top country rock, the stress for reducing top country rock are concentrated, corresponding to reduce top country rock junction part
Pressure effectively reduces top country rock crack progressing, improves safety；(3) by the way that upper flange to be embedded into back country rock,
Lower wing plate is embedded into roadway floor country rock, so that I-shaped checkdam collectively constitutes groundwater reservoir water blocking in conjunction with upper and lower country rock
Dam enhances firmness, stability and the safety of dam body entirety；(4) for only web is set, upper and lower wing plate tool
There are longer length and wider width, can effectively block reservoir water via the percolation path of upper and lower country rock, prevents upper and lower
Country rock weak part infiltration phenomenon, it is ensured that the stability and safety of dam body；(5) deepen insertion of the upper and lower wing plate in country rock
Depth can be further improved the stability of upper and lower wing plate, while at deeper insert depth, the infiltration coefficient of country rock is smaller,
Rock cranny is lower, can more efficiently obstruct percolation path, reduces the infiltration of water flow；(6) upper and lower wing plate and web
Two sides are arranged anchor rod anchored in stable country rock and coal column dam body, can be further improved the stability of country rock and two lateral wall portions；
(7) bolt grouting is capable of forming the area Zu Shen, and effect is seeped in the resistance that can further enhance lower wing plate substrate.
After above-mentioned technical solution, strong portion, side has the following technical effect that compared with the existing technology:
(1) since side portion's area by force is relatively large, increase itself and coal column dam body contact area, point that can either be more dispersed
The pressure from surrounding rock of portion, side country rock, and corresponding reduction coal column dam body junction local pressure are carried on a shoulder pole, chain pillar dam body side is effectively reduced
The development of portion's Rockmass fractures, reduces junction unstable failure；(2) due to side portion head by force, the seepage flow of reservoir water can effectively be blocked
Path prevents two lateral wall portion weak part of tunnel infiltration phenomenon, it is ensured that the stability and safety of dam body；(3) by that will help by force
Portion is embedded into coal column dam body, so that I-shaped checkdam collectively constitutes groundwater reservoir checkdam in conjunction with surrounding coal column dam body,
Enhance firmness, stability and the safety of dam body entirety；(4) deepen insert depth of the strong portion, side in coal column dam body, energy
The stability in strong portion, side is further increased, while at deeper insert depth, coal column dam body infiltration coefficient is smaller, rock cranny
Property is lower, can more efficiently obstruct percolation path, reduce the infiltration of water flow；(5) two sides by force portion, side setting it is anchor rod anchored in
In stable coal column dam body, the stability in two lateral wall portions can be further improved；(6) strong portion, side connect that form one whole with upper lower wing plate
Body structure, strong portion, side and upper lower wing plate are capable of forming complementary intensity, can more reinforce the intensity and overall stability of entire dam body；
(7) bolt grouting is capable of forming the area Zu Shen, and effect is seeped in the resistance that can further enhance two lateral wall portion of dam body.
Detailed description of the invention
Fig. 1 is the vertical section structure schematic diagram that checkdam is seeped in the I-shaped strong side resistance of first embodiment of the invention；
Fig. 2 is the A-A sectional view of Fig. 1；
Fig. 3 is the B-B sectional view of Fig. 1；
Fig. 4 is the area the A enlarged drawing of Fig. 2；
Fig. 5 is second of the area the A embodiment enlarged drawing of Fig. 2；
Fig. 6 is the vertical section structure schematic diagram that checkdam is seeped in the I-shaped strong side resistance of second embodiment of the invention；
Fig. 7 is the A-A sectional view of Fig. 6；
Fig. 8 is the B-B sectional view of Fig. 6；
Fig. 9 is the area the B enlarged drawing of Fig. 7；
Figure 10 is the area lower wing plate Zu Shen of the present invention schematic diagram；
Figure 11 is the strong area the Bang Buzushen schematic diagram of the present invention；
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, but not
Constitute limitation of the invention.Appended drawing reference therein indicates:
1- web, 2- upper flange, 3- lower wing plate, the portion, side by force 4-, 41- first hinder infiltration portion, and 42- second hinders infiltration portion, 5- anchor pole,
6- groundwater reservoir, the tunnel 7-, 8- coal column dam body, 9- country rock, 10- I-steel, H- web thickness, L- span length, the portion, side by force h-
Minister's degree is seeped in thickness, the resistance of S1- first, and minister's degree is seeped in the resistance of S2- second, and extension of the upper and lower wing plate of S3- on the basis of web thickness is long
Degree, development length of the upper lower wing plate of S4- on the basis of web width, the area Are- Zu Shen.
Specific embodiment
Understand in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below with reference to embodiment and attached
Figure, is described in further details the embodiment of the present invention.Here, illustrative embodiments and their description of the invention are for explaining this
Invention, but it is not as a limitation of the invention.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The indicating positions such as "bottom", "inner", "outside" or positional relationship are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of
Description the present invention and simplify description, rather than device, component or the structure of indication or suggestion meaning must have a particular orientation,
It is constructed or is operated with specific orientation, is not considered as limiting the invention.
It is also to be appreciated that term "comprises/comprising", " by ... form " or its any other variant be intended to
Non-exclusive inclusion, so that the product, equipment, process or the method that include a series of elements not only include those elements,
And when needing can also include other elements that are not explicitly listed, or further include for this product, equipment, process or
The intrinsic element of method.In the absence of more restrictions, by sentence " including/include ... ", " by ... form " limit
Fixed element, it is not excluded that there is also other identical elements in product, equipment, process or the method for including the element.
Specific implementation method of the invention is further illustrated below in conjunction with attached drawing.
" left side " in the present invention refers to that the left side of facing view tunnel longitudinal direction, " right side " refer to facing view tunnel longitudinal direction
The right side in direction, "upper" refer to that side of the facing view close to back, "lower" refer to facing view close to roadway floor
Side.As shown in Figure 1 and Figure 2, coal mine underground reservoir 6 is used to store the underground water source of coal mine, convenient for recycling underground water money
Source.I-shaped strong side resistance infiltration checkdam is built between the coal column dam body 8 of 7 left and right sides of tunnel, for 6 He of groundwater reservoir to be isolated
Tunnel 7 blocks the water source in groundwater reservoir 6.
Referring to figures 1-4, in figure, H indicates that the thickness of web 1, L indicate that the width in tunnel 7, h are the thickness in strong portion, side, S1
Indicate that minister's degree is seeped in the first resistance, S3 indicates that development length of upper and lower wing plate on the basis of web thickness, S4 indicate upper and lower wing plate
Development length on the basis of web width.
It successively includes upper flange 2, web 1 and lower wing plate 3 that checkdam dam body is seeped in I-shaped strong side resistance from top to bottom, dam body
Vertical cross-section perpendicular to dam facing is in " I " fonts, and it further includes being located at web or so that checkdam dam body is seeped in the I-shaped strong side resistance
The strong portion, side 4 of two sides, the strong portion, side include at least extending S1 length to the side of groundwater reservoir on the basis of 1 thickness of web
And the first resistance infiltration portion 41 formed, referring to attached drawing 4, i.e., the physical length in strong portion, side 4 is web thickness H+S1.Portion, strong side is embedded into
In the coal column dam body of two sides, upper flange is embedded in back country rock, and lower wing plate is embedded in roadway floor country rock, so that I-shaped
Checkdam collectively constitutes groundwater reservoir checkdam in conjunction with surrounding coal column dam body and country rock, enhances the secured journey of dam body entirety
Degree, stability and safety.
Referring to Fig. 1, Fig. 3, upper flange extends S3 on the basis of the thickness of web, extends S4 on the length of web,
It is thusly-formed upper flange.Equally, lower wing plate uses identical structure.By adding upper and lower wing plate at the top and bottom of web,
For web only is arranged, wing plate has bigger loaded area, and what upper flange can be more dispersed shares top country rock
Pressure from surrounding rock, the stress for reducing top country rock is concentrated, corresponding to reduce top country rock junction local pressure, effectively reduces top
Country rock crack progressing, lower wing plate can reduce substrate pressure, while base bearing capacity also can be improved, and can more effectively enhance basis
Globality, adjust differential settlement, effectively reduce bottom plate lower part Rockmass fractures development, reduce bottom plate unstable failure.
In the present invention, upper lower wing plate preferably extends over distance S3, S4 and is at least 50cm, such as 60cm, 80cm even 1m, more greatly
Loaded area can bring more preferably effect.
Referring to Fig. 1, Fig. 3, it is 50-100cm that upper flange 2, which is embedded in roof rock depth, and lower wing plate 3 is embedded in floor rocks depth
The stability of upper and lower wing plate can be further improved by insert depth of the upper and lower wing plate of intensification in country rock for 50-100cm,
Simultaneously at deeper insert depth, the infiltration coefficient of country rock is smaller, and rock cranny is lower, can more efficiently obstruct infiltration
Flow path reduces the infiltration of water flow.
It should be noted that insert depth of the upper lower wing plate in country rock is not limited to 50-100cm, according to the reality of country rock
Border lithology, insert depth can be smaller or bigger, the preferred upper flange of the present invention, the concrete that lower wing plate is thickness 30-50cm
The insert depth of structure, upper lower wing plate can be identical as the thickness of wing plate itself, and upper flange lower surface is held with back at this time
Flat, lower wing plate upper surface and roadway floor maintain an equal level, and can obtain more beautiful dam body appearance, while being also convenient for constructing.
Referring to fig. 4, the present invention, which is also seeped in I-shaped strong side resistance, adds strong portion, side 4 at left and right sides of checkdam web, due to
Strong side portion's area is relatively large, increases itself and coal column dam body contact area, can either be more dispersed share enclosing for side portion's country rock
Rock pressure power, and corresponding reduction coal column dam body junction local pressure, effectively reduce the development of chain pillar dam body side portion's Rockmass fractures,
Reduce junction unstable failure.
In the present invention, strong portion, side, which is specifically included on the basis of 1 thickness of web, at least extends S1 to the side of groundwater reservoir
Length and formed first resistance infiltration portion 41, the present invention in by force 4 development length S1 of portion, side be at least 50cm, preferably 80cm, and root
According to needing may extend up to 100cm or even 200cm, by the way that sufficient length at least is arranged to reservoir side on the basis of web thickness
Strong portion, side, obtain the strong portion, side of larger area, increase itself and coal column dam body contact area, can either be more dispersed share side
The pressure from surrounding rock of portion's country rock, and corresponding reduction coal column dam body junction local pressure, effectively reduce chain pillar dam body side portion's rock
Body crack progressing reduces junction unstable failure；Simultaneously as strong portion, side extends certain length, energy on the basis of web thickness
Enough percolation paths for effectively blocking reservoir water, even if can also pass through the stream of change reservoir water for the percolation path that cannot be blocked
Road and extend percolation path, referring to attached drawing 4, prevent two lateral wall portion weak part of tunnel from seeping water phenomenon, it is ensured that the stability of dam body
And safety.
Inner wall of the present invention further in the first resistance infiltration portion 41 in strong portion, side is provided with one layer of impervious barrier (not shown),
Impervious barrier is set in the groundwater reservoir side in the first resistance infiltration portion 41, effect is seeped in the resistance for so further increasing strong portion, side.
Referring back to Fig. 1, median ventral plate 1 of the present invention is wall type, and web 1 is concrete structure with a thickness of 1.00m, web 1, is had
Preferable barrier performance, in addition the mechanical characteristic of concrete itself, increases the intensity of checkdam.
In the present invention, it is preferable that it is 50-100cm that the upper end in portion, strong side, which is embedded in upper country rock depth, and the lower end in strong portion, side is embedded in
Lower country rock depth is 50-100cm, but the insert depth of upper and lower side is not limited to this, the specific quality, lithology for regarding country rock up and down with
And depending on water proof requirement and dam body intensity requirement.By deepening insert depth of the strong portion, side in upper and lower country rock, can further mention
The stability in high-strength portion, side.Due to the present invention while it being provided with upper lower wing plate, it, can be by the upper and lower side in strong portion, side in Practical Project
With upper lower wing plate one-piece casting, an overall structure is formed, is embedded in country rock up and down by upper lower wing plate, without emphasizing strong portion, side
It is embedded in country rock up and down.
The present invention by force portion, side be concrete structure, thickness h be extend on the basis of web width into coal column dam body 8 away from
From preferably 30-50cm, it is weak with artificial dam body junction that concrete structure can effectively reinforce two lateral wall portion coal column dam bodys 8
Point improves the effect of part water blocking, while forming certain support and invigoration effect to ckainuall dam body.
Portion, side connect to form an overall structure with upper lower wing plate the present invention by force, and strong portion, side and upper lower wing plate are capable of forming intensity
Complementation can more reinforce the intensity and overall stability of entire dam body.
Referring to fig. 2, in the present invention, the depth that strong portion, side 4 is embedded in coal column dam body is at least 50cm, preferably 60-200cm,
More preferably 80-150cm can be further improved the steady of strong portion, side by deepening insert depth of the strong portion, side in coal column dam body
It is qualitative, while at deeper insert depth, coal column dam body infiltration coefficient is smaller, and rock cranny is lower, can be more efficient
Ground obstructs percolation path, reduces the infiltration of water flow.
It should be noted that the thickness h in portion, strong side i.e. extended distance on the basis of web width is not limited to 30-50cm, abdomen
Board concrete structural thickness H is not limited to 1.00m, and the ratio between web thickness H and span length L is 0.1-0.3, preferably
0.18-0.20, in practical applications, based on groundwater reservoir water storage technical parameter, to calculate water blocking dam thickness and insertion
Country rock depth etc. forms safer checkdam.Strong portion, side is also not necessarily limited to above-mentioned numerical value in the insert depth of coal column dam body, real
The thickness in strong portion, side can be designed as with insert depth identical in the engineering of border, 4 inside of strong portion, side is held with 7 inner wall of tunnel at this time
It is flat, more preferably structure appearance can be obtained, while being also convenient for construction operation.
With continued reference to Fig. 6-Fig. 9, the another embodiment that checkdam is seeped in the I-shaped strong side resistance of the present invention is disclosed, mainly
Structure is identical as the first embodiment, the difference is that portion, strong side 4 further includes on the basis of 1 thickness of web to tunnel 7
The S2 length thereof that side extends, this is partially formed simultaneously as the second resistance infiltration portion 42.It is seeped by being hindered in groundwater reservoir side first
The second resistance infiltration portion 42 is further set in tunnel side on the basis of portion 41, can more efficiently obstruct the seepage flow of reservoir water,
Even if there is partial drainage water to penetrate into coal column dam body, it can also be obstructed by the second resistance infiltration portion 42, form second water proof barrier.
In the present invention, the length S2 in the second resistance infiltration portion 42 is no more than the length S1 in the first resistance infiltration portion 41.
Such as Fig. 5, in the case where being not provided with the second resistance infiltration portion 42, i.e., the length S2=0 in the second resistance infiltration portion 42 can be by suitable
When lengthening first hinders the length in infiltration portion 41, to ensure to hinder infiltration effect.
If Fig. 9 can suitably shorten the length in the first resistance infiltration portion 41 in the case where setting second hinders infiltration portion 42, so that the
The length in one resistance infiltration portion 41 is equal with the second resistance length S2 in infiltration portion 42, i.e. the length in the resistance of S1=S2 or even first infiltration portion 41 is more
Short, i.e. S1 < S2 reasonably saves project amount so under the premise of ensuring to hinder infiltration effect, reduces engineering cost.
It should be noted that the first resistance infiltration portion 41, second here hinders infiltration portion 42 and can be a part in strong portion, side 4, by
Strong portion, side is extended to form to two sides, be also possible to the mutually independent part in portion, side by force, but to be carried out with strong portion, side joint
Water-proofing treatment, a part in preferably strong portion, side are sealed, strong portion, side more can ensure that effect is seeped in resistance as a whole.
Hindering infiltration portion can be integrally formed using same concrete structure with strong portion, side, can also be using with property
Concrete, such as water-tight concrete.
Referring back to attached drawing 1, upper flange 2 protrudes into embedded division between country rock 9 and is equipped with 3 groups of anchor poles 5, and the quantity of anchor pole can also be
Every group three or more, more anchor poles 5 are intervally arranged, and an anchor pole can be arranged every 50cm, wherein one perpendicular to upper limb
Plate, in addition two are in that 45° angle is symmetrical with upper flange horizontal direction.The length of anchor pole 5 is 1.8-2.5m.Preferably, anchor pole
Be inserted into rock mass layer with a thickness of 1.5-2.0m.
With further reference to Figure 10, lower wing plate 3 protrudes into embedded division between country rock 9 and also is provided with 3 groups of anchor poles 5, and the quantity of anchor pole is also
Can be every group three or more, more anchor poles are intervally arranged, can every 50cm be arranged an anchor pole, wherein one perpendicular to
Lower wing plate, in addition two are in that 45° angle is symmetrical with lower wing plate horizontal direction, can either so improve the pressure resistance of substrate country rock
Degree, prevents crack unstable failure, and can be formed after slip casting and stablize the closely knit area Zu Shen Are, effectively prevents water from lower wing plate
With country rock junction seepage flow.The length of anchor pole 5 is 1.8-2.5m.Preferably, anchor pole 5 be inserted into rock mass layer with a thickness of 1.5-
2.0m。
Referring to fig. 2, Fig. 7, strong portion, side 4 are embedded in 8 part of coal column dam body and coal column dam body junction in dam body short transverse
It is inserted into multiple groups anchor pole 5, anchor pole passes through the loosening layer of the coal column dam body, is inserted into stable coal column dam body.
Specifically, embedded division is equipped with 4 groups of anchor poles, referring to Fig. 3, Fig. 8,4 to 1 two sides of web between portion, side 4 and coal column dam body 8 by force
One group of anchor pole 5 can be arranged every 50cm in group anchor pole uniform intervals arrangement, the quantity of anchor pole can also for every group three and with
On, wherein one perpendicular to strong portion, side, in addition two it is symmetrical in 45° angle with strong portion, side horizontal direction.The length of anchor pole 5 is
1.8-2.5m, the depth that anchor pole 5 is inserted into stable coal column dam body 8 is 1.5-2.0m.Anchor pole will guarantee vertically simultaneously, to guarantee to have
There is preferable stability.Anchor pole can be played the role of connecting checkdam and coal column dam body, be further enhanced gear by reinforced bar support
The intensity of dam can also improve the stability in two lateral wall portions.It, can be into one by being capable of forming the area Zu Shen Are to bolt grouting
Effect is seeped in the resistance in step enhancing two lateral wall portion of dam body, as shown in figure 11.
Referring back to the I-steel 10 for shown in Fig. 3, Fig. 8, being additionally provided with lateral and vertical interlaced arrangement in web 1, I-steel 10
In " well " font, be formed in entire web 1, the length of vertical I-steel at least equal to web 1 height, lateral I-steel
Length can also be connected to and protrude into lower wing plate and strong portion, side at least equal to the width of web 1.Checkdam can be enhanced in I-steel
Integral strength keeps out groundwater reservoir hydraulic pressure enough.I-steel can also form other shapes, hand over for example, steel mesh is added in cooperation
Fork is formed in concrete mainboard.
Preferably, lower wing plate 3 is in the position where web, there are bar constructions, convenient for being connect with web, one-piece casting shape
Integral lower wing plate；Portion, strong side 4 can pour in advance, stay and set reinforcing bar interface, convenient for being connect with web and upper lower wing plate, one-piece casting
Form portion, whole strong side.
In the present embodiment, the cross section of web is rectangle.
Preferably, being reserved with emergency peephole (not shown) in web 1.To prevent hydraulic pressure in library from uprushing to underground water
Library safe operation has an impact, and emergency peephole is arranged in checkdam suitable position.Effect includes: first is that using the hole in library
Hydraulic pressure water level and water quality are observed sample detection；Second is that setting valve starts pressure using valve, ensure that valve can be in police
Automatic or manual starting when hydraulic pressure is guarded against, ensures groundwater reservoir operational safety.
So far, though those skilled in the art will appreciate that the exemplary reality that present invention has been shown and described in detail herein
Example is applied, still, without departing from the spirit and scope of the present invention, still can be directly determined according to the present disclosure
Or derive many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the invention should be understood and defined as
Cover all such other variations or modifications.
Claims (30)
1. a kind of I-shaped strong side of coal mine underground reservoir, which hinders, seeps checkdam, between the coal column dam body at left and right sides of tunnel, use
In isolation groundwater reservoir and tunnel, the water source in groundwater reservoir is blocked, it is characterised in that: checkdam is seeped in the I-shaped strong side resistance
Dam body successively includes upper flange, web and lower wing plate from top to bottom, and the vertical cross-section perpendicular to dam facing of dam body is in " I " fonts,
It further includes the strong portion, side at left and right sides of web that checkdam dam body is seeped in the I-shaped strong side resistance, and the strong portion, side is included in abdomen
The the first resistance infiltration portion at least extending S1 length to the side of groundwater reservoir on the basis of plate thickness and being formed, strong portion, the side insertion
Into two sides coal column dam body, in the upper end insertion back country rock in web and strong portion, side, the lower end in web and strong portion, side is embedded in
In roadway floor country rock.
2. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 1, which is characterized in that the upper limb
Plate extends to form upper flange, width and thickness base of the lower wing plate in web around on the basis of the width and thickness of web
Lower wing plate is extended to form on plinth around.
3. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 2, which is characterized in that the upper limb
Plate extends at least 50cm.
4. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 2 or 3, which is characterized in that described
Lower wing plate extends at least 50cm.
5. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 1, which is characterized in that the upper limb
It is 50-100cm that plate, which is embedded in roof rock depth,.
6. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 5, which is characterized in that the upper limb
Plate lower surface and back maintain an equal level.
7. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 5, which is characterized in that the upper limb
Plate is the concrete structure of thickness 30-50cm.
8. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 1, which is characterized in that the bottom wing
It is 50-100cm that plate, which is embedded in floor rocks depth,.
9. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 8, which is characterized in that the bottom wing
Plate upper surface and roadway floor maintain an equal level.
10. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 8, which is characterized in that under described
Wing plate is the concrete structure of thickness 30-50cm.
11. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 1, which is characterized in that on described
Wing plate is embedded in the junction between roof rock part and roof rock and is equipped with multiple groups anchor pole in dam body width direction, and anchor pole is worn
The loosening layer for crossing the roof rock, is inserted into stable rock mass.
12. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 11, which is characterized in that every group of anchor
Bar has 3, wherein one perpendicular to upper flange, in addition two it is symmetrical in 45° angle with upper flange horizontal direction.
13. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 1, which is characterized in that under described
Wing plate is embedded in the junction between floor rocks part and floor rocks and is equipped with multiple groups anchor pole in dam body width direction, and anchor pole is worn
The loosening layer for crossing the floor rocks, is inserted into stable rock mass.
14. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 13, which is characterized in that every group of anchor
Bar has 3, wherein one perpendicular to lower wing plate, in addition two it is symmetrical in 45° angle with lower wing plate horizontal direction, so infusing
It is formed after slurry and stablizes the closely knit area Zu Shen.
15. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 1, which is characterized in that described strong
The depth of portion, side insertion coal column dam body is at least 50cm.
16. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 15, which is characterized in that described strong
The depth that portion, side is embedded in coal column dam body is 60-200cm.
17. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 16, which is characterized in that described strong
The depth that portion, side is embedded in coal column dam body is 80-150cm.
18. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 1, which is characterized in that described strong
Maintain an equal level on the inside of portion, side with tunnel inner wall.
19. according to claim 1 or checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir described in 18, which is characterized in that institute
State the concrete structure that strong portion, side is thickness 30-50cm.
20. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 1, which is characterized in that described the
The inner wall in one resistance infiltration portion is provided with one layer of impervious barrier.
21. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 1, which is characterized in that described strong
Portion, side further includes the second resistance infiltration portion for extending S2 length to tunnel side on the basis of web thickness and being formed.
22. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 21, which is characterized in that described the
The length S2 in two resistance infiltration portions is no more than the length S1 in first resistance infiltration portion.
23. according to claim 1 or checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir described in 22, which is characterized in that institute
The length S1 for stating the first resistance infiltration portion is at least 50cm.
24. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 1, which is characterized in that described strong
Multiple groups anchor pole is inserted into portion, side insertion coal column dam body part and coal column dam body junction in dam body short transverse, and anchor pole passes through described
The loosening layer of coal column dam body is inserted into stable coal column dam body.
25. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 24, which is characterized in that every group of anchor
Bar has 3, wherein one perpendicular to strong portion, side, in addition two it is symmetrical in 45° angle with strong portion, side horizontal direction, so infusing
It is formed after slurry and stablizes the closely knit area Zu Shen.
26. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 1, which is characterized in that the abdomen
The I-steel that lateral and vertical interlaced arrangement is in the arrangement of " well " font is provided in plate.
27. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 26, which is characterized in that the cross
To I-steel extend into the strong portion, side.
28. checkdam is seeped in the I-shaped strong side resistance of the coal mine underground reservoir according to claim 26 or 27, which is characterized in that institute
Vertical I-steel is stated to extend into the upper and lower wing plate.
29. checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir according to claim 1, which is characterized in that under described
There are bar constructions in the position where web for wing plate, and convenient for connecting with web, one-piece casting forms whole lower wing plate.
30. according to claim 1 or checkdam is seeped in the I-shaped strong side resistance of coal mine underground reservoir described in 29, which is characterized in that institute
Stating strong portion, side, there are bar constructions in the position where web, and convenient for connecting with web, one-piece casting forms portion, whole strong side.
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| CN110359957B (en) * | 2019-07-31 | 2021-02-09 | 国家能源投资集团有限责任公司 | Dam body connecting structure and construction method thereof |
| CN110396982A (en) * | 2019-07-31 | 2019-11-01 | 中国神华能源股份有限公司 | A kind of artificial dam attachment structure and construction method |
| CN113026678B (en) * | 2021-04-05 | 2022-02-22 | 天地科技股份有限公司 | But take automatic tensioning function's reuse colliery underground reservoir dam body |
| CN113338228A (en) * | 2021-07-02 | 2021-09-03 | 辽宁工程技术大学 | Artificial dam body applied to coal mine underground reservoir |
| CN113789759B (en) * | 2021-09-24 | 2022-06-21 | 中国矿业大学(北京) | Assembled arc-shaped artificial dam body of coal mine underground reservoir and construction method thereof |
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